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<?php
/**
 * Class provides ajax that tracks lead frontend movement
 * @package     Shared
 * @subpackage  Tracking
 */
if (!class_exists('Inbound_Ajax')) {

    class Inbound_Ajax {

        /**
         *    Initializes classs
         */
        public function __construct() {
            self::load_hooks();
        }

        /**
         *    Loads hooks and filters
         */
        public static function load_hooks() {

            /* Increases the page view statistics of lead on page load */
            add_action('wp_ajax_inbound_track_lead', array(__CLASS__, 'track_lead'));
            add_action('wp_ajax_nopriv_inbound_track_lead', array(__CLASS__, 'track_lead'));

        }

        /**
         * Listen for page view event
         */
        public static function track_lead() {

            global $wpdb;

            /* check for known bots and ignore */
            if (isset($_SERVER['HTTP_USER_AGENT']) && preg_match('/bot|crawl|slurp|spider/i', $_SERVER['HTTP_USER_AGENT'])) {
                return;
            }

            $lead_data['lead_id'] = (isset($_POST['wp_lead_id'])) ? (int) $_POST['wp_lead_id'] : '';
            $lead_data['nature'] = (isset($_POST['nature'])) ? sanitize_text_field($_POST['nature']) : 'non-conversion'; /* what is nature? */
            $lead_data['json'] = (isset($_POST['json'])) ? addslashes($_POST['json']) : 0;
            $lead_data['wp_lead_uid'] = (isset($_POST['wp_lead_uid'])) ? sanitize_text_field($_POST['wp_lead_uid']) : 0;
            $lead_data['page_id'] = (isset($_POST['page_id'])) ? (int) $_POST['page_id'] : 0;
            $lead_data['current_url'] = (isset($_POST['current_url'])) ?  sanitize_text_field($_POST['current_url']) : 'notfound';
            $lead_data['variation_id'] = (isset($_POST['variation_id'])) ? (int) $_POST['variation_id'] : '0';

            $timezone_format = 'Y-m-d G:i:s T';
            $lead_data['datetime'] =  date_i18n($timezone_format);

            $page_views = stripslashes($_POST['page_views']);

            $page_views = ($page_views) ? $page_views : '';
            $lead_data['event_details']['funnel'] = json_decode($page_views,true);
            $lead_data['funnel'] = $page_views;

            /* update funnel cookie */
            if (isset($_COOKIE['inbound_page_views']) && !$page_views) {
                $_SESSION['inbound_page_views'] = stripslashes($_COOKIE['inbound_page_views']);
            } else {
                $_SESSION['inbound_page_views'] = $page_views;
            }

            /* update lead data and set lead lists into cookies */
            if ($lead_data['lead_id']) {
                self::update_page_view_obj($lead_data);
                self::set_current_lists($lead_data['lead_id']);
            }

            /* create page_view event */
            if ($lead_data['page_id']) {
                Inbound_Events::store_page_view($lead_data);
            }

            /* record CTA impressions */
            $cta_impressions = ( isset($_POST['cta_impressions']) ) ? json_decode(stripslashes($_POST['cta_impressions']),true) : array();

            if (is_array($cta_impressions)) {
                foreach ( $cta_impressions as $cta_id => $vid ) {
                    $lead_data['cta_id'] = (int) $cta_id;
                    $lead_data['variation_id'] = (int) $vid;
                    do_action('wp_cta_record_impression', $lead_data );
                }
            }

            /* Record landing page impression */
            do_action('lp_record_impression', $lead_data['page_id'], $_POST['post_type'], $_POST['variation_id']);

            die();
        }

        public static function update_page_view_obj($lead_data) {

            if (!$lead_data['page_id']) {
                return;
            }

            $current_page_view_count = get_post_meta($lead_data['lead_id'], 'wpleads_page_view_count', true);
            $increment_page_views = $current_page_view_count + 1;

            update_post_meta($lead_data['lead_id'], 'wpleads_page_view_count', $increment_page_views); // update count

            $time = current_time('timestamp', 0); // Current wordpress time from settings
            $wordpress_date_time = date("Y-m-d G:i:s T", $time);
            $page_view_data = get_post_meta($lead_data['lead_id'], 'page_views', TRUE);


            // If page_view meta exists do this
            if ($page_view_data) {
                $current_count = 0; // default
                $timeout = 30;  // 30 Timeout analytics tracking for same page timestamps
                $page_view_data = json_decode($page_view_data, true);
                // increment view count on page
                if (isset($page_view_data[$lead_data['page_id']])) {
                    $current_count = count($page_view_data[$lead_data['page_id']]);
                    $last_view = $page_view_data[$lead_data['page_id']][$current_count];
                    $timeout = abs(strtotime($last_view) - strtotime($wordpress_date_time));
                }
                // If page hasn't been viewed in past 30 seconds. Log it
                if ($timeout >= 30) {
                    $page_view_data[$lead_data['page_id']][$current_count + 1] = $wordpress_date_time;
                    $page_view_data = json_encode($page_view_data);
                    update_post_meta($lead_data['lead_id'], 'page_views', $page_view_data);
                }
            } else {
                // Create page_view meta if it doesn't exist
                $page_view_data = array();
                $page_view_data[$lead_data['page_id']][0] = $wordpress_date_time;
                $page_view_data = json_encode($page_view_data);
                update_post_meta($lead_data['lead_id'], 'page_views', $page_view_data);
            }
            /* Run hook that tells WordPress lead data has been updated */
            do_action('wplead_page_view', $lead_data);
        }

        public static function set_current_lists($lead_id) {
            $terms = get_the_terms( $lead_id , 'wplead_list_category' );

            if ( $terms && ! is_wp_error( $terms ) ) {
                $lead_list = array();
                $count = 0;

                foreach ( $terms as $term ) {
                    $lead_list[] = $term->term_id;
                    $count++;
                }

                $list_array = json_encode(array('ids' => $lead_list));

                setcookie('wp_lead_list', $list_array, (int) ( time() + (20 * 365 * 24 * 60 * 60) ), '/');
            }
        }

    }

    /* Loads Inbound_Ajax pre init */
    $Inbound_Ajax = new Inbound_Ajax();
}